Corral 
Corral 
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WANS 
AW 
1(188 
WSF 
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RRStatio 
Scale of feet. 
100 4 
SKETCH OF BLACK ROCK AND VICINITY, 
UTAH TERRITORY. 
Prepared to show the position of the graduated pillar erected by Dr. John Park for observations on the water-level of 
Great Salt Lake, and the position of the granite bench-mark. 
